Gas-furnace.



A. E. HALL.

GAS FURNACE. APPLICATION FILED MAY 19, 1913.

1,099,876. V Patented June-9,1914.

I 16' I (90 21 v n I 1 1 I I I g? 26 WITNESSES: :5: INVENTOR [#4) 4(ZZfie/ZZZ'HaZZ.

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. 1:: an n. L, or OAKLAND, cnrrronnm, 'assxenon- T0 HALL summon co.,Inc,

OF OAKLAND, CALIFORNIA, A. COIBZPORATIONOI CALIFORNIA.

GwAS -FURNACE.

Specification of Letters Patent. PatentedJune-9 1914 Application filedMa 19, "1913. Serial No. 768,479..

Tra ail whom it may concern:

Be itv known that I, AiLBEKII. E. HALL, a citizen. of the United States,residing at 0ahland in the county of Alameda and State of Galifornia,have invented new and useful Improvements.- in Gas-Furnaces, 0i

which the following is a specification.

l his invention relates to airheaters and particularly to a gas furnace.

It is one of the objects of the present invention to provide a gasfurnace in which the maximum heating efliciency of. the. heat units.produced by the combustion of the fuel may be had; to provideanimprovedgasfurnace in combination with; a register supportcdby' thestructural-elements of the building to beheated; and to provide in; agas .lurnace novelxmeans for igniting the burner ot the turnace from aposition adjacent to the register, thusavoiding the noses 'sity of theperson desiring to light the burner leaving the room. in which theregister may be arranged or into which the heat fromuthe furnace may bedelivered.

lfit isa furtherobject of the invention to provide a furnace structurewhich can be very readily'attached to and detached from the buildingstructure with. a minimum cost and without requiring expensivealterations or changes in the structure, and also to proride incombination with an air heater means through'which the burner may hescent. and: thus more readily and carefully controlled to. produce thedesired flame.

'll he invention consists of the parts and the construction andcombination of parts as hereinafter more fully described and claimed,having referenceto' the accompanying airing, in which the figure is acentral vertical section through. the furnace.

lllhis invention comprises a furnace or air heat structure consisting otthree substantially; concentric drums, as-an outermost flue or casing2,. an intermediate wall 3, and. an innermost drum 4, the latter beingclosed with a top-5 and abottom 6 and these members being interconnectedby air'tubes 7 extending parallel throu h the heat drum 4. The heat drum4 and t e intermediate wall 3 terminate in approximately a common planeand. these are rigidly connected with" the casing or shellt2 by a grillor other suit.-

able frame or. brace 8, provided with" openln gs. of ample area for theflow of air,' aswill be hereinafter setfort-h.

Mounted upon the top 5 of the heat drum- 4 1s a window?)v of suitablearea, and which may be of mica or other heat-resisting transparentmaterial, through which, when looking. downward, there is renderedvisible a burner 10. The burner 10 is here shown as mounted: within a.burner chamber 11 attached to" the bottom 6 of the heat drum 4;

the' burner chamber 1D projecting downwardly throu h an aperture 1-2 bfslightly larger area ten the area of. the burner chamber and which isformed. in aabottom' 13 closing the lower portion ot the furnace casingor shell 2 except for the aperture 12 through which the burner chamber11 proects.

An important feature of the present invention consists in; the means forconnecting the furnace with the structural. elements of the building in.which; it may be mounted,

and which means alsolform fines for the conveyance of cold air to; theair chamber,

within the intermediate wall 3 of the furnace, andfor conveying theheated air there from into\ the room. or apartment to be heated.'Ilothat end the shell 2 of the" furnace is shown-as tapered at itsupper portionand continuedrin the reduced neck. 14; whichterminatesadjacent to and rests in a floor register l5. of any suitabletype, which maybe mounted upon the floor 16 of the structure. To thejointsl'l ofthe floor are attached suspending hangers 18 appropriatelyand detachably secured, to the casing 2ofthefurnace, and? which hangerssubstantially support the entire load of the furnace bydirect-connection with thefloor joists 17..

The hot air flue 3 is contracted. and exr tended. upwardly at a throatL9, concentric with the neck 14,. and. also seats in the lower portion:of the register l5which is rovided with the usual apertures,through: eouter- 'most, as 20, of which the cold lower strata of air can. flowdownwardly in a space between the neck 14: and throat 19,. while throughthe inner apertures 21 ot the register the heated air will riseirom overthe heatv drum. Thus a. constant. circulation is furnace bottom 12 andbelow the heat drum bottom 6, from which space the air will rise throughthe several air tubes 7 and pass into the throat 19, issuing in a heatedstate through the register apertures 21, whence it freely rises.

A particular advantage of the present furnace is that all of the heatunits,.except the small proportion escaping with the burnt gases at theescape flue 4, which is located in the drum 4 well down toward itsbottom, are conserved and utilized by heating the upwardly rising volumeof air in the annular chamber or flue between the walls 3 and 4;.The'downward draft of air from the register apertures 20 andin the spacebetween the outermost wall 2 and the hot air flue 3 prevents the loss ofheat units from the wall 3 of the hot air flue, since the down wardlymoving colder volume of air will become heated by the heat radiatingfromthe wall 3 and its temperature again increased as itflows upwardlythrough the hot air chamber between the wall 3 and the drum 4.

Another important advantage of this construction is that the hotand warmmembers of the furnace are insulated from contact with any of thetructural elements, particu larly where the throat19 of the hot air flue3 passes through the floor joists and connects with'the register 15,since thethroat 19 is surrounded by a volume of cold air'movmgdownward-1y withinthe neck .14.

It is a further object of this invention to eliminate the necessity ofthe attendant or person desiring to ignite fuel at the burner, or tomanipulate the control valves thereof, having to go from one floor, orfrom one room, to another of the building, for the sim ple purpose ofregulating the valves of the burner. Tothat end I have provided a novelmeans for igniting the gas conveyed to'the burner 10 by a supply-pipe22. The igniting .means consists o a tube 23 supported andopening at itsupper end in the register 15; the tube being projected downwardly throuh the furnace and through one of the air tubes 7 of the heatdrum,through the bottom 13 of thefurnace, and terminating with an open endjust above a burner 24 having burner openings directed upwardly andhorizontally' The burner discharges in close proximity to the open endof the air tube 23 and the horizontal burner openings discharge a jet ofgas toward an aperture 24 formed in the burner chamber 11 just above theburner 10.

The two'way jet burner 24 is provided with gas by a suitableconnection-26 with the supply pipe'22, in which pipe 26 is mounted anadjustable control valve 27 having a'stem 28 projecting upwardly throughthe "furnace and terminating and resting in the register 15. Into theupper end of the turns the valve stem 28 to admit gas to the valve 29,through which it flows in a reduced quantity to the two-way jet burner24. Then by applying a light, match or flame from any source at the topof the igniter tube 23 the gas rising from the jet burner 24 thereinwill be ignited and will backfire, causing combustion tooccur at thedouble tips of the burner 24. The horizontal jet projects through theaperture 24' of the burner chamber lland this may be observed by theperson looking through the apertures of the register 15 and the window 9of the heater drum, through which the burner 10 in the chamber 11 willbe visible. When the pilot flame is projecting into the burner chamber11, the

operator then places a key over the upper end of a valve stem 80 in theregister 15', which stem projects downwardly and connects with a mainvalve 31 controlling the flow of gas from the feed pipe 22 to the burner10, thereby opening the valve 31 to upper end of the pilot valve stem 28and turns oflf the pilot flame.

Having thus described my invention, what I claim and desire tosecure byLetters Patent, is i 1. A floor hot air heater comprising a register, anouter and an intermediate shell secured to and depending from theregister, an inner drum havinga top' and bottom which top and bottom arespaced from the ends of the outer shell, air tubes extending through thetop andbottom of the inner drum, said top having a window therein whichis in vertical alinement with said register, a'burner chamber alinedwith the window and register and connected to the-bottom of said innerdrum and projecting be low the bottom of the outer shell, 3 bottom forthe outer shell having an aperture through which the lower end of theburnen chamber projects. a burner arranged below the bottom of saidouter shell and projected into said chamber, a supply pipe for thethrough the top and bottom of the inner,

drum, said top having a window therein which is-in' vertical alinementwith said register, a burner chamber alined with the window and registerand connected to the bottom of said inner drum and projecting below thebottom of the outer shell, a bottom for the outer shell having anaperture through'which the lower end of the burner chamber projects,and' a burner below the bottom of the outer shell and projected intosaid chamber.

3. A floor heater composed of a register, a shell secured to anddepending from said register and having a bottom, a burner chamberconnecting with the shell interior,

. a supply pipe for the burner, a pipe communicating with the supplypipe, a two-way jet burner connected to the second mentioned pipe, avertical air pipe having its upper end secured to the register andhaving its lower end arranged over one of said jets, the

other of said jets registering with 'a lateral aperture providedtherefor in the burner chamber, a rotatable valve in each of said pipes,and a rod for each valve, said rods being connected at their lower endsto the valves and having their upper ends rotatably secured to theregister.

4:- A floor heater consisting of a register, an outer and anintermediate shell secured to and depending from the register, an innershell having a top and a bottom, the bottom of the inner shell'and thebottom of the intermediate shell terminating in a common plane which islocated above the plane of the bottom of the outer shell, a: grillconnected to the outer and intermediate shells and to the lower end oftheinner shell for supporting the latter, a burner chamber connected tothe bottom of the inner shell and depending below the lower end of theouter shell, a burner in the chamber, and a bottom for the outer shellthrough which said chamber projects.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

I ALBERT E. HALL.

Witnesses:

HARRY E. LEACH, E. R. CORDAN.

